4878909 has 24 divisors (see below), whose sum is σ = 8245952. Its totient is φ = 2721600.

The previous prime is 4878893. The next prime is 4878919. The reversal of 4878909 is 9098784.

4878909 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 4878909 - 2⁴ = 4878893 is a prime.

It is a Duffinian number.

4878909 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4878919) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1809 + ... + 3609.

Almost surely, 2^4878909 is an apocalyptic number.

It is an amenable number.

4878909 is a deficient number, since it is larger than the sum of its proper divisors (3367043).

4878909 is a wasteful number, since it uses less digits than its factorization.

4878909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1857 (or 1854 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 45.

The square root of 4878909 is about 2208.8252533870. The cubic root of 4878909 is about 169.6058805403.

The spelling of 4878909 in words is "four million, eight hundred seventy-eight thousand, nine hundred nine".